Heat-insulated receptacle.



W. WH1TE. HEAT INSULATED EEGBPTAGLE. APPLICATION FILED APILU, 1-9.13.

1,095,759. I 'Patentemaymsu 2 SHEETS-SHEET l.

ATRNEYS L. W. WHITE.

HEAT INSULATED RBGBPTACLE;

PPLIOATION FILED APR.11, 191s. Y

Patented May 5,1914.

2 SHEETS-SHEET 2.

` 'BY Anoka/EVS LESLIE W. WHITE, OF RIDG-WAY, MONTANA.

HEAT-INSULATED BEOEPTACLE.

Application filed April 11, 1.913, Serial No. 760,411.

To aZZ 'ibwm t may concern:

Be it known that I, LESLIE lV. WHITE, a

citizen of the United States, and a resident of Ridgway,

inthe county of Custer and State of Montana, have invented a new and Improved Heat- Insulated' Receptacle.. of

which the following is a full, clear, and exi act description.

This invention relates to cooking apparatus. and has-particular reference to receptacles having for their'purpose the making of a device combining the features of a sterilizing vessel and a tireless cooker.

Among the objects of, this invention is to construct a utensil comprising a comparatively small number of parts providing for a receptacle or kettle proper having ,a lid YVadapted to be sealed for the pur-pose .of re'- taining the vapors and-flavors up to a .cer-A tain desiredhigh pressure. e

A further object of the-invention is to provide ffor the kettle a peculiar form or construction of insulated bottom which, when attached to the kettle, will consti-tute the device vas an effective tireless cooker.

rlhe foregoing and :other objects of the'in vention will hereinafter be more fully described and claimed yand .illustrated in the drawings forming a part yofthis speci-{ication in which like characters of reference .indicate corresponding yparts in all the views, and in whic Figure 1 is a `vert-ical sectional View of the complete device taken ion the line 1 1 vof- Fig. 2; Fig. 2 5is a transverse section on the line 2-2 of Fig. 1; Fig. 3 is a plan View corresponding to Fig. 1; Fig. 4 is a detail, in elevation, of the hasp; and Fig. 5 is a detail on the line 5.-5 of Fig. 3.

The several parts of this device may be 'made ofany suitable materials, and the relative sizes and proportions, as well as the general design of the construction, may be varied to a considerable extent without departing from. the spirit lof the invention `hereinafter more fully set forth and specilically claimed. v

As above premised, the construction includes three principal parts, namely, a kettle A, a lid B, and a detachable bottom C.

.Each of these three parts is-made up of substantially vparallel spaced walls whichmay be Aofany suitablecomparatively thin like mate- Specification of Letters atent.

strength is Patented May 5, 1914.

rial, the spacingbeing intended for the purpose of providing a vacuunr within such part, whereby I provide for the maximum degree of insulation with respect to heat and cold. In order -to e of collapse of the two walls with respect to each other due to external pressure, I prof vide an internal bracing of peculiar construction, the same including sets of ribs oi' prevent any possibility v any suitable form, but certain of the ribs be- A ing arranged with .crisscross relation to -others of the ribs. More specifically, ,the bracing for the kettle, which is shown of a substantially cylindrical configuration, comprises pairs of ribs 10 and 11 which extend around the kettle p circumferentially, each pair ofisai'd ribs lying substantially in the same plane, but spaced from each other at 12. The ribs 1-0 are connected to the outer Wall 13, and the ribs 11 are-connected to the inner wall 14, and vthe ribs 11 are shown as being .broader than the others. At 15 .are shown i.vertical ribs extending from the wall 13 and abutting against the vouter v.peripheries of .the ribs 11. The ribs l11 and 15, therefore,constitute the principal bracing supports for the walls. Additional ,produced by the narrower ribs 10 and the cor-respondingribs 16 extendingvertically along the wall 14 and toward the ribs 15. `Spaces -17 are` left between adjacent ribs .15 and 16, whereby all of the interior of the space between the walls 1 3 and 14 may be made into .a vacuum. The lid B likewise includes outer and inner walls 18 and 19 having a checker work internal bracing including ribs 10, 1.1, 15 and 16, corresponding in general each to each with the ribs of the kettle above described.l The bot- Stom C is substantially iiat, comprising upper and lower walls 2O and 21, and internal bracing ribs arranged substantially. as already described, and numbered for identiiication the saine as those of thel lid. The bottom also includes an upwardly projecting rim or flange 22 within which the bottom of the kettle is adapted to be seated andv se-r cured by any suitable means as, for instance, I by a plurality of hasps 23liinged at 24 to the wall .13 of [the kettle and engaging over staples 25 'extending outwardly from said Arim 22 and through whichthe kettle and its bottom may fbe locked :together securely.

inwardly elli In the formation of the kettle, the inner wall 14 is extended outwardly at its upper edge forminga horizontal ange 26, and thence is bent upwardly and slightly outwardly, as shown at 27, forming a seat, and thence horizontally again as shown at 28,

- and thence directly downwardly forming a `as indicated at 31', Fig. 3. As shown by reference to Figs. 3 vand 5, each of the lips 31 is arranged on its lower surface with a cam or spiral 31a. -Said collar is provided with a pair of vhandles 32, whereby it may be manipulated.

The lid B has its inner wall 19 formed with a flaring portion 33 complemental to the seat 27 with which it cooperates, and also the lid is formed with outwardly projecting tongues 34C corresponding to the spaces 31 of the collar through which theyl are adapted to be passed for the purpose of locking the lid to the kettle, as shown in Fig. 3. The lid, also, is provided with handles 35 secured thereto byears 36 or in any other suitable manner, whereby the`v lid may be turned through a partial. rotation into the position shown in Fig. 3, and in which position the tongues 3a lie beneath the lips 31 of the collar. A slight rotation "of the collar with the lid in this position serves to eilect an airtight seal through tlie beveled portions 33 and 2?. lWhen-the lid isV put in place and after the tongues 3l pass through the spaces i 31 't are caused to come into engagement with tr.. above mentioned Lspirals or cams with the result that the conical surfaces of the arches and 27 will be forced together Substantially snugly, but inasmuch as the movement of the lid inst described requires the rotation thereof, the friction between the lid andthe seat prevents the close sealing which may be brought about by subsequently Giving the collar 30 a slight rotation so as to Lorce the cams 31'L1 down more rmly upon the tongues 34 and hence completing the sealing of the vessel. By confining the steam or vapors during the cooking operation until the contents of the kettle reach a temperature of approximately 280 degrees, a thorough sterilization and rapid cooking of the contents are sure toresult.

lr order to insure safety, however, to the de. ice thus bar described, l provide an automatic valve comprising a conical seat 37 th nigh which communication may be had from the interior of the kettle at 37,.4 A conical valve 38 is seated within said valve f seat and normally closes the outlet 37 Said mesme valve 38, like the main parts of the device, is preferably made hollow to increase the insu L lating efficiency thereof and reduce the weight to a minimum. The valve lalso is provided with an upwardly projecting stem 39 which is surrounded by a spring 40.

spider 41 having at its center a hole to receive the valve lstem is interlocked within -the top of the valve seat 37 by means of a series of inwardly projecting lips l2 between and under which the ends t3 of the spider operate. The spring 4:0 operates at one end against the spider and at the other end against the valve 38, and has suiiicient strength to maintain the internal pressure vdesired. When, however, the pressure eX- ceeds the desired amount, the valve will be unseated against' the spring until the pressure is reduced. I.

With the kettle filled with material to be treated and vstood upon a stove with its bottom plate 44 in direct contact with the source of heat, the contents of the kettle will become heated according to the nature thereof to the desired degree, andl then the kettle is placed within the rim 22 of the false bottom C and there secured if it is desired -to employ the device as aipireless cooker. For the purpose of increasing the sealing eiciency of the device, 4theco-acting surfaces, such as between the valve 38and its seat and the parts 33 and 27, may be turned in a lathe. Also, in the construction olf the kettle walls, the cooperating ribs 11 and l5 may likewise be turned or ground in order to secure a more accurate fit.

,i Hav-ing thus described my invention, lll. claim as new and desire to secure by Letters Patenti-- 1. 1n a heat insulated receptacle, the combination oi a device having a pair of spaced parallel walls forming a vacuum chamber, said walls being formed of comparatively thin material, and internal bracing devices serving to prevent collapseof the walls, said bracing devices .including sets of broad ribs applied to the respective walls and extend' ing therefrom toward and into engagement with each other, the ribs of each set being parallel to one another and meeting the ribs of the-other set at right angles, and a set olf narrower ribs intersecting the broad ribs applied to the same wall, and each broad rib of one wall lying in the same plane as anarrower rib of the opposite wall, substantially as set forth. l

2. In a device of the character set forth, the combination of a pair of spaced parallel walls forming a vacuum chamber, said walls beingiormedror'v comparatively thin mate rial, and bracing devices between said walls, said bracing devices including sets oit broader and narrower ribs extending toward each other Ain pairs but spaced from each other, the ribs of each pair lying in the same URU piane, and other sets of pairs of broader andn narrower ribs arranged singularly with 're- In testimony whereof I have signed my i name to this specification n the presence of speet tothe rst sets of ribs, the broader ribs two subscribing Witnesses.

of one set being'applied tO One Wall and engaging the broader ribs O'f the other set applied to the other wall and engaging one lanother each to each.i

` LESLIE W. WHITE.

Witnesses:

ALMA4 M. JOHNSON, OSCAR E. JOHNSON. 

